Soy has revolutionized the economies of South American countries like Brazil, Argentina Uruguay and Paraguay, thanks to China’s insatiable appetite for the product. Argentina is the world's number 3 soybean supplier and its top exporter of soymeal, used to feed cattle, and soyoil, used in the booming biofuels sector. As a result, the Argentine Pampa looks nothing like it did 20 years ago: soybean plantations have replaced fruit trees and cattle farming, like in Rosario, the country’s biggest exporter of soy and its sub products. But with almost 65% of its farmlands being planted with soy, Argentina is veering towards a single-crop farming economy which could be dangerous in the long-term. Duration: 02:50